Adapting Onjali Q Raúf's novel for the stage proved a challenge but her refugee story, which has a new nod to Harper Lee, is both urgent and unforgettable When I was young, my Bangladeshi dad embodied immigrant parent cliches. We grew up in a corner shop and he ran a restaurant and takeaway. He regularly, unequivocally demanded that his children learn a skill that we could take anywhere in the world as there might…